/Engine/Source/Runtime/Slate/Public/Widgets/Views/STableRow.h
The Signal Selection mode affect when the owner table gets notified that the selection has changed. This only affect the selection with the left mouse button! When Deferred, the owner table will get notified when the button is released or when a drag started. When Instantaneous, the owner table is notified as soon as the selection changed.
WidgetArgsType & SignalSelectionMode &40; ETableRowSignalSelectionMode InArg &41;